java program to remove duplicate words in a string
String fullString = "lol lol";
String[] words = fullString.split("\\W+");
StringBuilder stringBuilder = new StringBuilder();
Set<String> wordsHashSet = new HashSet<>();
for (String word : words) {
if (wordsHashSet.contains(word.toLowerCase())) continue;
wordsHashSet.add(word.toLowerCase());
stringBuilder.append(word).append(" ");
}
String nonDuplicateString = stringBuilder.toString().trim();how to remove duplicate elements from char array in java
public static void main(String[] args) {
Main main = new Main();
char[] array = {'e','a','b','a','c','d','b','d','c','e'};
main.getCharArray(array);
}
private char[] getCharArray(char[] array) {
String _array = "";
for(int i = 0; i < array.length; i++) {
if(_array.indexOf(array[i]) == -1) // check if a char already exist, if not exist then return -1
_array = _array+array[i]; // add new char
}
return _array.toCharArray();
}Copyright © 2021 Codeinu
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